56563511 has 2 divisors, whose sum is σ = 56563512. Its totient is φ = 56563510.

The previous prime is 56563483. The next prime is 56563519. The reversal of 56563511 is 11536565.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56563511 is a prime.

It is equal to p_3369902 and since 56563511 and 3369902 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56563519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28281755 + 28281756.

It is an arithmetic number, because the mean of its divisors is an integer number (28281756).

Almost surely, 2^56563511 is an apocalyptic number.

56563511 is a deficient number, since it is larger than the sum of its proper divisors (1).

56563511 is an equidigital number, since it uses as much as digits as its factorization.

56563511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13500, while the sum is 32.

The square root of 56563511 is about 7520.8716914996. The cubic root of 56563511 is about 383.8652390805.

The spelling of 56563511 in words is "fifty-six million, five hundred sixty-three thousand, five hundred eleven".